In Data Cartels, legal scholar Sarah Lamdan exposes the shadowy industry built around collecting, packaging, and selling our personal data. She reveals how powerful companies hoard information and use aggressive tactics to maintain control—turning data into a commodity that can deepen inequality and restrict the democratic flow of knowledge. Heather Joseph, executive director of the Scholarly Publishing and Academic Resources Coalition (SPARC) speaks with Lamdan about the hidden power structures behind the data economy.